CVE-2022-22737 Use after free in Firefox
A race condition in Firefox and Thunderbird audio sink construction leads to a use-after-free, potentially allowing attackers to execute arbitrary code or cause a crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2022-22737?
CVE-2022-22737 is a high-severity use after free vulnerability in Mozilla Firefox, published on 22 Dec 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Constructing audio sinks could have lead to a race condition when playing audio files and closing windows. This could have lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
Weakness: CWE-362
Which versions are affected by CVE-2022-22737?
It affects 3 products.
Products include Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird.
How do I fix CVE-2022-22737?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2022-22737 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-22737 exists.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as DEBIAN-CVE-2022-22737, GHSA-m884-m9x6-6rg3, UBUNTU-CVE-2022-22737.